The rationale given above is bupkis: "don't use us professionally because shit happens and good practices etc". The user in the story knew how to roll back and did so, and still wasted a lot of time and effort trying to hunt down the bug - being helpful, like an ideal user is. As an explanation, it's a total cop-out.

An April Fool's prank should be quickly evident to the victim, not make them spend hours wasting their time. Especially when the victims are strangers.